Nope you are correct but I make it €28k. 😯 Why are you so surprised, Spain is a high tax society.
Your income attracts 47% income tax after allowances of €6,069 if over 65. Also your world wide assets including a UK property attracts taxation. There are child allowances and disability concessions.
Then there is IVA at 21% on just about everything including all utility bills. 🙁
Also some tax rises have recently been announced for 2014/15.
Last year 90,000 Brits left Spain or rather de-registered. It’s not difficult to see why.